一个使用LinearLayoutManager为RecyclerViews加上section headers效果的列表控件，支持横向和纵向。
运行效果：
使用说明：
主要有三个类：StickyRecyclerHeadersAdapter, StickyRecyclerHeadersDecoration, 和StickyRecyclerHeadersTouchListener.
StickyRecyclerHeadersAdapter的使用非常接近于 RecyclerView.Adapter，建议让你的 RecyclerView.Adapter实现 StickyRecyclerHeadersAdapter，StickyRecyclerHeadersAdapter接口如下：
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public interface StickyRecyclerHeadersAdapter<VH extends RecyclerView.ViewHolder> {
public long getHeaderId(int position);
public VH onCreateHeaderViewHolder(ViewGroup parent);
public void onBindHeaderViewHolder(VH holder, int position);
public int getItemCount();
}
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StickyRecyclerHeadersDecoration是整个效果的关键，但你并不需要额外的配置，下面是在activity中使用它的例子：
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mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
mAdapter =
new
MyStickyRecyclerHeadersAdapter();
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setLayoutManager(
new
LinearLayoutManager(context));
mRecyclerView.addItemDecoration(
new
StickyRecyclerHeadersDecoration(mAdapter));
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StickyRecyclerHeadersTouchListener是section头部被点击的事件的监听者，使用如下：
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StickyRecyclerHeadersTouchListener touchListener =
new
StickyRecyclerHeadersTouchListener(recyclerView, headersDecor);
touchListener.setOnHeaderClickListener(
new
StickyRecyclerHeadersTouchListener.OnHeaderClickListener() {
@Override
public void onHeaderClick(View header, int position, long headerId) {
Toast.makeText(MainActivity.
this
,
"Header position: "
+ position +
", id: "
+ headerId,
Toast.LENGTH_SHORT).show();
}
});
mRecyclerView.addOnItemTouchListener(touchListener);
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Sticky Headers decorator for Android's RecyclerView
